Espressif systems Esp32-s2-mini-2 User manual

ESP32-S2-MINI-2UserManual2.4GHzWi-Fi(802.11b/g/n)moduleBuiltaroundESP32-S2seriesofSoC(chiprevisionv1.0),Xtensa®single-core32-bitLX7mi-croprocessor4MBflashandoptional2MBPSRAMinchippackage37GPIOs,richsetofperipheralsOn-boardPCBantennaESP32-S2-MINI-2Pre-releasev0.5EspressifSystemsCopyright©2022www.espressif.com

1ModuleOverview1ModuleOverviewESP32-S2-MINI-2isageneral-purposeWi-Fimodule.Therichsetofperipheralsandasmallsizemakethismoduleanidealchoiceforsmarthomes,industrialautomation,healthcare,consumerelectronics,etc.Table1:ESP32-S2-MINI-2SpecificationsCategoriesParametersSpecificationsWi-FiProtocols802.11b/g/n(upto150Mbps)Frequencyrange2412~2462MHzHardwareModuleinterfacesGPIO,SPI,I2S,UART,I2C,LEDPWM,TWAI®,LCD,Camerainterface,ADC,DAC,touchsensor,temper-aturesensor,USBOTGIntegratedcrystal40MHzcrystalOperatingvoltage/Powersupply3.0V~3.6VOperatingcurrentAverage:80mAMinimumcurrentdeliveredbypowersupply500mAAmbienttemperature–40°C~+85°C/105°CMoisturesensitivitylevel(MSL)Level3EspressifSystems2ESP32-S2-MINI-2UserManualv0.5

ContentsContents1ModuleOverview22PinDefinitions42.1PinLayout42.2PinDescription43GetStarted73.1WhatYouNeed73.2HardwareConnection73.3SetupDevelopmentEnvironment83.3.1InstallPrerequisites83.3.2GetESP-IDF83.3.3SetupTools93.3.4SetupEnvironmentVariables93.4CreateYourFirstProject93.4.1StartaProject93.4.2ConnectYourDevice93.4.3Configure103.4.4BuildtheProject103.4.5FlashontotheDevice113.4.6Monitor124U.S.FCCStatement145RelatedDocumentationandResources18RevisionHistory19EspressifSystems3ESP32-S2-MINI-2UserManualv0.5

2PinDefinitions2PinDefinitions2.1PinLayoutThepindiagrambelowshowstheapproximatelocationofpinsonthemodule.

Pin 1

Pin 2

Pin 3

Pin 4

Pin 5

Pin 6

Pin 7

Pin 8

Pin 9

Pin 10

Pin 11

Pin 12

Pin 13

Pin 14

Pin 15

GND

3V3

IO0

IO1

IO2

IO3

IO4

IO5

IO6

IO7

IO8

IO9

IO10

IO11

Pin 63

GND

IO12 Pin 16

Pin 17

Pin 18

Pin 19

Pin 20

Pin 21

Pin 22

Pin 23

Pin 24

Pin 25

Pin 26

Pin 27

Pin 28

Pin 29

Pin 30

Pin 64

GND

Pin 31

IO13

IO14

IO15

IO16

IO17

IO18

IO19

IO20

IO21

IO26

IO33

IO34

GND

Pin 32

Pin 33

Pin 34

Pin 35

Pin 36

Pin 37

Pin 38

Pin 39

Pin 40

Pin 41

Pin 42

Pin 43

Pin 44

Pin 45

Pin 65

GND

Pin 62

GND

Pin 46

Pin 47

Pin 48

Pin 49

Pin 50

Pin 51

Pin 52

Pin 53

Pin 54

Pin 55

Pin 56

Pin 57

Pin 58

Pin 59

Pin 60

Pin 61

GND

GND GND GND

GNDGND

GND GND GND

IO35

IO36

IO37

IO38

IO39

IO40

IO41

IO42

TXD0

RXD0

IO45

GND

IO46

GND

Keepout Zone

Figure1:PinLayout(TopView)2.2PinDescriptionThemodulehas65pins.SeepindefinitionsinTable2.Forperipheralpinconfigurations,pleaserefertoESP32-S2SeriesDatasheet.Table2:PinDefinitionsNameNo.Type1FunctionGND1,2,30,42,43,46-65PGround3V33PPowersupplyCont’donnextpageEspressifSystems4ESP32-S2-MINI-2UserManualv0.5

2PinDefinitionsTable2–cont’dfrompreviouspageNameNo.Type1FunctionIO04I/O/TRTC_GPIO0,GPIO0IO15I/O/TRTC_GPIO1,GPIO1,TOUCH1,ADC1_CH0IO26I/O/TRTC_GPIO2,GPIO2,TOUCH2,ADC1_CH1IO37I/O/TRTC_GPIO3,GPIO3,TOUCH3,ADC1_CH2IO48I/O/TRTC_GPIO4,GPIO4,TOUCH4,ADC1_CH3IO59I/O/TRTC_GPIO5,GPIO5,TOUCH5,ADC1_CH4IO610I/O/TRTC_GPIO6,GPIO6,TOUCH6,ADC1_CH5IO711I/O/TRTC_GPIO7,GPIO7,TOUCH7,ADC1_CH6IO812I/O/TRTC_GPIO8,GPIO8,TOUCH8,ADC1_CH7IO913I/O/TRTC_GPIO9,GPIO9,TOUCH9,ADC1_CH8,FSPIHDIO1014I/O/TRTC_GPIO10,GPIO10,TOUCH10,ADC1_CH9,FSPICS0,FSPIIO4IO1115I/O/TRTC_GPIO11,GPIO11,TOUCH11,ADC2_CH0,FSPID,FSPIIO5IO1216I/O/TRTC_GPIO12,GPIO12,TOUCH12,ADC2_CH1,FSPICLK,FSPIIO6IO1317I/O/TRTC_GPIO13,GPIO13,TOUCH13,ADC2_CH2,FSPIQ,FSPIIO7IO1418I/O/TRTC_GPIO14,GPIO14,TOUCH14,ADC2_CH3,FSPIWP,FSPIDQSIO1519I/O/TRTC_GPIO15,GPIO15,U0RTS,ADC2_CH4,XTAL_32K_PIO1620I/O/TRTC_GPIO16,GPIO16,U0CTS,ADC2_CH5,XTAL_32K_NIO1721I/O/TRTC_GPIO17,GPIO17,U1TXD,ADC2_CH6,DAC_1IO1822I/O/TRTC_GPIO18,GPIO18,U1RXD,ADC2_CH7,DAC_2,CLK_OUT3IO1923I/O/TRTC_GPIO19,GPIO19,U1RTS,ADC2_CH8,CLK_OUT2,USB_D-IO2024I/O/TRTC_GPIO20,GPIO20,U1CTS,ADC2_CH9,CLK_OUT1,USB_D+IO2125I/O/TRTC_GPIO21,GPIO21IO26226I/O/TSPICS1,GPIO26NC27—NCIO3328I/O/TSPIIO4,GPIO33,FSPIHDIO3429I/O/TSPIIO5,GPIO34,FSPICS0IO3531I/O/TSPIIO6,GPIO35,FSPIDIO3632I/O/TSPIIO7,GPIO36,FSPICLKIO3733I/O/TSPIDQS,GPIO37,FSPIQIO3834I/O/TGPIO38,FSPIWPIO3935I/O/TMTCK,GPIO39,CLK_OUT3IO4036I/O/TMTDO,GPIO40,CLK_OUT2IO4137I/O/TMTDI,GPIO41,CLK_OUT1IO4238I/O/TMTMS,GPIO42TXD039I/O/TU0TXD,GPIO43,CLK_OUT1RXD040I/O/TU0RXD,GPIO44,CLK_OUT2IO4541I/O/TGPIO45IO4644IGPIO46EN45IHigh:on,enablesthechip.Low:off,thechippowersoff.Note:DonotleavetheENpinfloating.EspressifSystems5ESP32-S2-MINI-2UserManualv0.5

2PinDefinitions1P:powersupply;I:input;O:output;T:highimpedance.2IO26isusedbytheembeddedPSRAMontheESP32-S2-MINI-2-N4R2module,andcannotbeusedforotherpurposes.EspressifSystems6ESP32-S2-MINI-2UserManualv0.5

3GetStarted3GetStarted3.1WhatYouNeedTodevelopapplicationsformoduleyouneed:•1xESP32-S2-MINI-2•1xEspressifRFtestingboard•1xUSB-to-Serialboard•1xMicro-USBcable•1xPCrunningLinuxInthisuserguide,wetakeLinuxoperatingsystemasanexample.FormoreinformationabouttheconfigurationonWindowsandmacOS,pleaserefertoESP-IDFProgrammingGuide.3.2HardwareConnection1.SoldertheESP32-S2-MINI-2moduletotheRFtestingboardasshowninFigure2.Figure2:HardwareConnection2.ConnecttheRFtestingboardtotheUSB-to-SerialboardviaTXD,RXD,andGND.3.ConnecttheUSB-to-SerialboardtothePC.4.ConnecttheRFtestingboardtothePCorapoweradaptertoenable5Vpowersupply,viatheMicro-USBcable.5.Duringdownload,connectIO0toGNDviaajumper.Then,turn”ON”thetestingboard.6.Downloadfirmwareintoflash.Fordetails,seethesectionsbelow.EspressifSystems7ESP32-S2-MINI-2UserManualv0.5

3GetStarted7.Afterdownload,removethejumperonIO0andGND.8.PoweruptheRFtestingboardagain.Themodulewillswitchtoworkingmode.Thechipwillreadprogramsfromflashuponinitialization.Note:IO0isinternallylogichigh.IfIO0issettopull-up,theBootmodeisselected.Ifthispinispull-downorleftfloating,theDownloadmodeisselected.FormoreinformationonESP32-S2-MINI-2,pleaserefertoESP32-S2SeriesDatasheet.3.3SetupDevelopmentEnvironmentTheEspressifIoTDevelopmentFramework(ESP-IDFforshort)isaframeworkfordevelopingapplicationsbasedontheEspressifSoCs.UserscandevelopapplicationswithESP32-S2inWindows/Linux/macOSbasedonESP-IDF.HerewetakeLinuxoperatingsystemasanexample.3.3.1InstallPrerequisitesTocompilewithESP-IDFyouneedtogetthefollowingpackages:•CentOS7&8:1sudo yum -y update && sudo yum install git wget flex bison gperf python3 python3-

pip

2python3-setuptools cmake ninja-build ccache dfu-util libusbx

•UbuntuandDebian:1sudo apt-get install git wget flex bison gperf python3 python3-pip python3-

setuptools

2cmake ninja-build ccache libffi-dev libssl-dev dfu-util libusb-1.0-0

•Arch:1sudo pacman -S --needed gcc git make flex bison gperf python-pip cmake ninja

ccache

2dfu-util libusb

Note:•Thisguideusesthedirectory~/esponLinuxasaninstallationfolderforESP-IDF.•KeepinmindthatESP-IDFdoesnotsupportspacesinpaths.3.3.2GetESP-IDFTobuildapplicationsforESP32-S2-MINI-2module,youneedthesoftwarelibrariesprovidedbyEspressifinESP-IDFrepository.TogetESP-IDF,createaninstallationdirectory(~/esp)todownloadESP-IDFtoandclonetherepositorywith‘gitclone’:EspressifSystems8ESP32-S2-MINI-2UserManualv0.5

3GetStarted1mkdir -p ~/esp

2cd ~/esp

3git clone --recursive https://github.com/espressif/esp-idf.git

ESP-IDFwillbedownloadedinto~/esp/esp-idf.ConsultESP-IDFVersionsforinformationaboutwhichESP-IDFversiontouseinagivensituation.3.3.3SetupToolsAsidefromtheESP-IDF,youalsoneedtoinstallthetoolsusedbyESP-IDF,suchasthecompiler,debugger,Pythonpackages,etc.ESP-IDFprovidesascriptnamed’install.sh’tohelpsetupthetoolsinonego.1cd ~/esp/esp-idf

2./install.sh

3.3.4SetupEnvironmentVariablesTheinstalledtoolsarenotyetaddedtothePATHenvironmentvariable.Tomakethetoolsusablefromthecommandline,someenvironmentvariablesmustbeset.ESP-IDFprovidesanotherscript’export.sh’whichdoesthat.IntheterminalwhereyouaregoingtouseESP-IDF,run:1. $HOME/esp/esp-idf/export.sh

Noweverythingisready,youcanbuildyourfirstprojectonESP32-S2-MINI-2module.3.4CreateYourFirstProject3.4.1StartaProjectNowyouarereadytoprepareyourapplicationforESP32-S2-MINI-2module.Youcanstartwithget-started/hello_worldprojectfromexamplesdirectoryinESP-IDF.Copyget-started/hello_worldto~/espdirectory:1cd ~/esp

2cp -r $IDF_PATH/examples/get-started/hello_world .

ThereisarangeofexampleprojectsintheexamplesdirectoryinESP-IDF.Youcancopyanyprojectinthesamewayaspresentedaboveandrunit.Itisalsopossibletobuildexamplesin-place,withoutcopyingthemfirst.3.4.2ConnectYourDeviceNowconnectyourmoduletothecomputerandcheckunderwhatserialportthemoduleisvisible.SerialportsinLinuxstartwith‘/dev/tty’intheirnames.Runthecommandbelowtwotimes,firstwiththeboardunplugged,thenwithpluggedin.Theportwhichappearsthesecondtimeistheoneyouneed:1ls /dev/tty*

Note:Keeptheportnamehandyasyouwillneeditinthenextsteps.EspressifSystems9ESP32-S2-MINI-2UserManualv0.5

3GetStarted3.4.3ConfigureNavigatetoyour‘hello_world’directoryfromStep3.4.1.StartaProject,setESP32-S2chipasthetargetandruntheprojectconfigurationutility‘menuconfig’.1cd ~/esp/hello_world

2idf.py set-target esp32s2

3idf.py menuconfig

Settingthetargetwith‘idf.pyset-targetESP32-S2’shouldbedoneonce,afteropeninganewproject.Iftheprojectcontainssomeexistingbuildsandconfiguration,theywillbeclearedandinitialized.Thetargetmaybesavedinenvironmentvariabletoskipthisstepatall.SeeSelectingtheTargetforadditionalinformation.Ifthepreviousstepshavebeendonecorrectly,thefollowingmenuappears:Figure3:ProjectConfiguration-HomeWindowYouareusingthismenutosetupprojectspecificvariables,e.g.Wi-Finetworknameandpassword,theprocessorspeed,etc.Settinguptheprojectwithmenuconfigmaybeskippedfor“hello_word”.ThisexamplewillrunwithdefaultconfigurationThecolorsofthemenucouldbedifferentinyourterminal.Youcanchangetheappearancewiththeoption‘-฀-style’฀.Pleaserun‘idf.pymenuconfig-฀-help’฀forfurtherinformation.3.4.4BuildtheProjectBuildtheprojectbyrunning:1idf.py build

ThiscommandwillcompiletheapplicationandallESP-IDFcomponents,thenitwillgeneratethebootloader,partitiontable,andapplicationbinaries.1$ idf.py build

2Running cmake in directory /path/to/hello_world/build

3Executing ”cmake -G Ninja --warn-uninitialized /path/to/hello_world”...

EspressifSystems10ESP32-S2-MINI-2UserManualv0.5

3GetStarted4Warn about uninitialized values.

5-- Found Git: /usr/bin/git (found version ”2.17.0”)

6-- Building empty aws_iot component due to configuration

7-- Component names: ...

8-- Component paths: ...

910... (more lines of build system output)

1112[527/527] Generating hello_world.bin

13esptool.py v2.3.1

1415Project build complete. To flash, run this command:

16../../../components/esptool_py/esptool/esptool.py -p (PORT) -b 921600

17write_flash --flash_mode dio --flash_size detect --flash_freq 40m

180x10000 build/hello_world.bin build 0x1000 build/bootloader/bootloader.bin 0x8000

19build/partition_table/partition-table.bin

20or run ’idf.py -p PORT flash’

Iftherearenoerrors,thebuildwillfinishbygeneratingthefirmwarebinary.binfile.3.4.5FlashontotheDeviceFlashthebinariesthatyoujustbuiltontoyourmodulebyrunning:1idf.py -p PORT [-b BAUD] flash

ReplacePORTwithyourESP32-S2board’sserialportnamefromStep:ConnectYourDevice.YoucanalsochangetheflasherbaudratebyreplacingBAUDwiththebaudrateyouneed.Thedefaultbaudrateis460800.Formoreinformationonidf.pyarguments,seeidf.py.Note:Theoption‘flash‘automaticallybuildsandflashestheproject,sorunning‘idf.pybuild‘isnotnecessary.Whenflashing,youwillseetheoutputlogsimilartothefollowing:1...

2esptool.py esp32s2 -p /dev/ttyUSB0 -b 460800 --before=default_reset --after=hard_reset

3write_flash --flash_mode dio --flash_freq 80m --flash_size 4 MB 0x0 bootloader/bootloader.

bin

40x10000 hello_world.bin 0x8000 partition_table/partition-table.bin

5esptool.py v3.2-dev

6Serial port /dev/ttyUSB0

7Connecting....

8Chip is ESP32-S2

9Features: WiFi

10Crystal is 40MHz

11MAC: 7c:df:a1:e0:00:64

12Uploading stub...

13Running stub...

EspressifSystems11ESP32-S2-MINI-2UserManualv0.5

3GetStarted14Stub running...

15Changing baud rate to 460800

16Changed.

17Configuring flash size...

18Flash will be erased from 0x00000000 to 0x00004fff...

19Flash will be erased from 0x00010000 to 0x00039fff...

20Flash will be erased from 0x00008000 to 0x00008fff...

21Compressed 18896 bytes to 11758...

22Writing at 0x00000000... (100 %)

23Wrote 18896 bytes (11758 compressed) at 0x00000000 in 0.5 seconds (effective 279.9 kbit/s)

...

24Hash of data verified.

25Compressed 168208 bytes to 88178...

26Writing at 0x00010000... (16 %)

27Writing at 0x0001a80f... (33 %)

28Writing at 0x000201f1... (50 %)

29Writing at 0x00025dcf... (66 %)

30Writing at 0x0002d0be... (83 %)

31Writing at 0x00036c07... (100 %)

32Wrote 168208 bytes (88178 compressed) at 0x00010000 in 2.4 seconds (effective 569.2 kbit/s

)...

33Hash of data verified.

34Compressed 3072 bytes to 103...

35Writing at 0x00008000... (100 %)

36Wrote 3072 bytes (103 compressed) at 0x00008000 in 0.1 seconds (effective 478.9 kbit/s)...

37Hash of data verified.

3839Leaving...

40Hard resetting via RTS pin...

41Done

Iftherearenoissuesbytheendoftheflashprocess,theboardwillrebootandstartupthe“hello_world”application.3.4.6MonitorTocheckif“hello_world”isindeedrunning,type‘idf.py-pPORTmonitor‘(DonotforgettoreplacePORTwithyourserialportname).ThiscommandlaunchestheIDFMonitorapplication:1$ idf.py -p /dev/ttyUSB0 monitor

2Running idf_monitor in directory [...]/esp/hello_world/build

3Executing ”python [...]/esp-idf/tools/idf_monitor.py -b 115200

4[...]/esp/hello_world/build/hello-world.elf”...

5--- idf_monitor on /dev/ttyUSB0 115200 ---

6--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---

7ets Jun 8 2016 00:22:57

89rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)

10ets Jun 8 2016 00:22:57

EspressifSystems12ESP32-S2-MINI-2UserManualv0.5

3GetStarted11...

Afterstartupanddiagnosticlogsscrollup,youshouldsee“Helloworld!”printedoutbytheapplication.1...

2Hello world!

3Restarting in 10 seconds...

4This is esp32s2 chip with 1 CPU core, WiFi,

5silicon revision 1

6Minimum free heap size: 390684 bytes

7Restarting in 9 seconds...

8Restarting in 8 seconds...

9Restarting in 7 seconds...

ToexitIDFmonitorusetheshortcutCtrl+].That’sallwhatyouneedtogetstartedwithESP32-S2-MINI-2module!NowyouarereadytotrysomeotherexamplesinESP-IDF,orgorighttodevelopingyourownapplications.EspressifSystems13ESP32-S2-MINI-2UserManualv0.5

4U.S.FCCStatement4U.S.FCCStatementThedevicecomplieswithKDB996369D03OEMManualv01.BelowareintegrationinstructionsforhostproductmanufacturersaccordingtotheKDB996369D03OEMManualv01.ListofApplicableFCCRulesFCCPart15SubpartC15.247SpecificOperationalUseConditionsThemodulehasWiFifunctions.•OperationFrequency:–WiFi:2412~2462MHz•NumberofChannel:–WiFi:11•Modulation:–WiFi:DSSS;OFDM•Type:On-boardPCBantenna•Gain:4.54dBiMaxThemodulecanbeusedforIoTapplicationswithamaximum4.54dBiantenna.ThehostmanufacturerinstallingthismoduleintotheirproductmustensurethatthefinalcompositproductcomplieswiththeFCCrequirementsbyatechnicalassessmentorevaluationtotheFCCrules,includingthetransmitteroperation.ThehostmanufacturerhastobeawarenottoprovideinformationtotheenduserregardinghowtoinstallorremovethisRFmoduleintheuser’smanualoftheendproductwhichintegratesthismodule.Theendusermanualshallincludeallrequiredregulatoryinformation/warningasshowinthismanual.LimitedModuleProceduresNotapplicable.ThemoduleisasinglemoduleandcomplieswiththerequirementofFCCPart15.212.TraceAntennaDesignsNotapplicable.Themodulehasitsownantenna,anddoesnotneedahost’sprintedboardmicrostriptraceantenna,etc.RFExposureConsiderationsThemodulemustbeinstalledinthehostequipmentsuchthatatleast20cmismaintainedbetweentheantennaandusers’body;andifRFexposurestatementormodulelayoutischanged,thenthehostproductmanufacturerrequiredtotakeresponsibilityofthemodulethroughachangeinFCCIDornewapplication.TheFCCIDofthemodulecannotbeusedonthefinalproduct.Inthesecircumstances,thehostmanufacturerwillberesponsibleforre-evaluatingtheendproduct(includingthetransmitter)andobtainingaseparateFCCauthorization.EspressifSystems14ESP32-S2-MINI-2UserManualv0.5

4U.S.FCCStatementAntennasAntennaspecificationareasfollows:•Type:On-boardPCBantenna•Gain:4.54dBiThisdeviceisintendedonlyforhostmanufacturersunderthefollowingconditions:•Thetransmittermodulemaynotbeco-locatedwithanyothertransmitterorantenna.•Themoduleshallbeonlyusedwiththeexternalantenna(s)thathasbeenoriginallytestedandcertifiedwiththismodule.•Theantennamustbeeitherpermanentlyattachedoremploya‘unique’antennacoupler.Aslongastheconditionsabovearemet,furthertransmittertestwillnotberequired.However,thehostmanufacturerisstillresponsiblefortestingtheirend-productforanyadditionalcompliancerequirementsrequiredwiththismoduleinstalled(forexample,digitaldeviceemissions,PCperipheralrequirements,etc.).LabelandComplianceInformationHostproductmanufacturersneedtoprovideaphysicalore-labelstating“ContainsFCCID:2AC7Z-ESPS2MINI2”withtheirfinishedproduct.Informationontestmodesandadditionaltestingrequirements•OperationFrequency:–WiFi:2412~2462MHz•NumberofChannel:–WiFi:11•Modulation:–WiFi:DSSS;OFDMHostmanufacturermustperformtestofradiatedandconductedemissionandspuriousemission,etc.,accordingtotheactualtestmodesforastand-alonemodulartransmitterinahost,aswellasformultiplesimultaneouslytransmittingmodulesorothertransmittersinahostproduct.OnlywhenallthetestresultsoftestmodescomplywithFCCrequirements,thentheendproductcanbesoldlegally.Additionaltesting,Part15SubpartBcompliantThemodulartransmitterisonlyFCCauthorizedforFCCPart15SubpartC15.247andthatthehostproductmanufacturerisresponsibleforcompliancetoanyotherFCCrulesthatapplytothehostnotcoveredbythemodulartransmittergrantofcertification.IfthegranteemarketstheirproductasbeingPart15SubpartBcompliant(whenitalsocontainsunintentional-radiatordigitalcircuity),thenthegranteeshallprovideanoticestatingthatthefinalhostproductstillrequiresPart15SubpartBcompliancetestingwiththemodulartransmitterinstalled.ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigitaldevice,pursuanttoPart15oftheFCCRules.TheselimitsaredesignedtoprovidereasonableprotectionagainstharmfulinterferenceEspressifSystems15ESP32-S2-MINI-2UserManualv0.5

4U.S.FCCStatementinaresidentialinstallation.Thisequipmentgenerates,usesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstructions,maycauseharmfulinterferencetoradiocommunications.However,thereisnoguaranteethatinterferencewillnotoccurinaparticularinstallation.Ifthisequipmentdoescauseharmfulinterferencetoradioortelevisionreception,whichcanbedeterminedbyturningtheequipmentoffandon,theuserisencouragedtotrytocorrecttheinterferencebyoneofthefollowingmeasures:•Reorientorrelocatethereceivingantenna.•Increasetheseparationbetweentheequipmentandreceiver.•Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiverisconnected.•Consultthedealeroranexperiencedradio/TVtechnicianforhelp.ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothefollowingtwoconditions:•Thisdevicemaynotcauseharmfulinterference.•Thisdevicemustacceptanyinterferencereceived,includinginterferencethatmaycauseundesiredoperation.Caution:Anychangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoidtheuser’sauthoritytooperatetheequipment.ThisequipmentcomplieswithFCCRFradiationexposurelimitssetforthforanuncontrolledenvironment.Thisdeviceanditsantennamustnotbeco-locatedoroperatinginconjunctionwithanyotherantennaortransmitter.Theantennasusedforthistransmittermustbeinstalledtoprovideaseparationdistanceofatleast20cmfromallpersonsandmustnotbeco-locatedoroperatinginconjunctionwithanyotherantennaortransmitter.OEMIntegrationInstructionsThisdeviceisintendedonlyforOEMintegratorsunderthefollowingconditions:•Thetransmittermodulemaynotbeco-locatedwithanyothertransmitterorantenna.•Themoduleshallbeonlyusedwiththeexternalantenna(s)thathasbeenoriginallytestedandcertifiedwiththismodule.Aslongastheconditionsabovearemet,furthertransmittertestwillnotberequired.However,theOEMintegratorisstillresponsiblefortestingtheirend-productforanyadditionalcompliancerequirementsrequiredwiththismoduleinstalled(forexample,digitaldeviceemissions,PCperipheralrequirements,etc.).ValidityofUsingtheModuleCertificationIntheeventthattheseconditionscannotbemet(forexamplecertainlaptopconfigurationsorco-locationwithanothertransmitter),thentheFCCauthorizationforthismoduleincombinationwiththehostequipmentisnolongerconsideredvalidandtheFCCIDofthemodulecannotbeusedonthefinalproduct.Inthesecircumstances,theOEMintegratorwillberesponsibleforre-evaluatingtheendproduct(includingthetransmitter)andobtainingaseparateFCCauthorization.EspressifSystems16ESP32-S2-MINI-2UserManualv0.5

4U.S.FCCStatementEndProductLabelingThefinalendproductmustbelabeledinavisibleareawiththefollowing:“ContainsTransmitterModuleFCCID:2AC7Z-ESPS2MINI2”.EspressifSystems17ESP32-S2-MINI-2UserManualv0.5

5RelatedDocumentationandResources5RelatedDocumentationandResourcesRelatedDocumentation•ESP32-S2SeriesDatasheet–SpecificationsoftheESP32-S2hardware.•ESP32-S2TechnicalReferenceManual–DetailedinformationonhowtousetheESP32-S2memoryandperipherals.•ESP32-S2HardwareDesignGuidelines–GuidelinesonhowtointegratetheESP32-S2intoyourhardwareproduct.•ESP32-S2SeriesSoCErrata–DescriptionsoferrorsinESP32-S2seriesofSoCsfromchiprevision0forward.•Certicateshttps://espressif.com/en/support/documents/certificates•ESP32-S2Product/ProcessChangeNotications(PCN)https://espressif.com/en/support/documents/pcns•ESP32-S2Advisories–Informationonsecurity,bugs,compatibility,componentreliability.https://espressif.com/en/support/documents/advisories•DocumentationUpdatesandUpdateNoticationSubscriptionhttps://espressif.com/en/support/download/documentsDeveloperZone•ESP-IDFProgrammingGuideforESP32-S2–ExtensivedocumentationfortheESP-IDFdevelopmentframework.•ESP-IDFandotherdevelopmentframeworksonGitHub.https://github.com/espressif•ESP32BBSForum–Engineer-to-Engineer(E2E)CommunityforEspressifproductswhereyoucanpostquestions,shareknowledge,exploreideas,andhelpsolveproblemswithfellowengineers.https://esp32.com/•TheESPJournal–BestPractices,Articles,andNotesfromEspressiffolks.https://blog.espressif.com/•SeethetabsSDKsandDemos,Apps,Tools,ATFirmware.https://espressif.com/en/support/download/sdks-demosProducts•ESP32-S2SeriesSoCs–BrowsethroughallESP32-S2SoCs.https://espressif.com/en/products/socs?id=ESP32-S2•ESP32-S2SeriesModules–BrowsethroughallESP32-S2-basedmodules.https://espressif.com/en/products/modules?id=ESP32-S2•ESP32-S2SeriesDevKits–BrowsethroughallESP32-S2-baseddevkits.https://espressif.com/en/products/devkits?id=ESP32-S2•ESPProductSelector–FindanEspressifhardwareproductsuitableforyourneedsbycomparingorapplyingfilters.https://products.espressif.com/#/product-selector?language=enContactUs•SeethetabsSalesQuestions,TechnicalEnquiries,CircuitSchematic&PCBDesignReview,GetSamples(Onlinestores),BecomeOurSupplier,Comments&Suggestions.https://espressif.com/en/contact-us/sales-questionsEspressifSystems18ESP32-S2-MINI-2UserManualv0.5

RevisionHistoryRevisionHistoryDateVersionReleasenotes2022-09-22v0.5PreliminaryreleaseEspressifSystems19ESP32-S2-MINI-2UserManualv0.5

www.espressif.comDisclaimerandCopyrightNoticeInformationinthisdocument,includingURLreferences,issubjecttochangewithoutnotice.ALLTHIRDPARTY’SINFORMATIONINTHISDOCUMENTISPROVIDEDASISWITHNOWARRANTIESTOITSAUTHENTICITYANDACCURACY.NOWARRANTYISPROVIDEDTOTHISDOCUMENTFORITSMERCHANTABILITY,NON-INFRINGEMENT,FITNESSFORANYPARTICULARPURPOSE,NORDOESANYWARRANTYOTHERWISEARISINGOUTOFANYPROPOSAL,SPECIFICATIONORSAMPLE.Allliability,includingliabilityforinfringementofanyproprietaryrights,relatingtouseofinformationinthisdocumentisdisclaimed.Nolicensesexpressorimplied,byestoppelorotherwise,toanyintellectualpropertyrightsaregrantedherein.TheWi-FiAllianceMemberlogoisatrademarkoftheWi-FiAlliance.TheBluetoothlogoisaregisteredtrademarkofBluetoothSIG.Alltradenames,trademarksandregisteredtrademarksmentionedinthisdocumentarepropertyoftheirrespectiveowners,andareherebyacknowledged.Copyright©2022EspressifSystems(Shanghai)Co.,Ltd.Allrightsreserved.

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